Sewing-machine motor



Nov. 20, 1923.

E. NIELSEN SEWING MACHINE MOTQR ,2 Sheets-Sheet l Filed Aug. 30 1919 WI TNESS A TTORNEY5.

Nov. 20,1923.

E. NIELSEN SEWING MACHINE MOTOR 1919 2 Sheets-Sheet 2 Filed Aug. 30

I N VEN TOR.

ATTORNEYQ citizen of the United States, and resident of p UNEEE erases.

masca- PAT NT ferr c-r.

EMANUEL NIELSEN, or nacinn'wisoonsm, assrenon ToHAMnTon-iaEAcI-I MFG. 00;, 0F BACINE, WISCONSIN, A conronn'rio'n or Wisconsin.

SEWING-MACHINE Moron.

Application filed August 30.1919. Serial No. 320,893.

TofaZZ whom it may concern:

Be-it known that I, EMANUEL NmLsnN, a

Racine, in the county of Racine and State of VVISCOHSHI, have invented new and useful. Improvements in Sewmg-vla'chme Motors, of

which the VfOllOWlII QlS adescription, refer-" ence being had to the accompanying draw ings, which are a part of this specification. This invention relates to improvements in sewing machine motors more particularly adapted for sewing or; other light machine use. 1 a V his one of, the objects of the present invention to provide a sewing machine motor which may be easily mounted on the base portion of the arm of any or'dinar 1 sewing machine and which when not in use may be swung to an out-of-the-way position beneath the armto occupy the minimum amount of space when not in use, and to permit the closing of the top or arm of the machine into the table without removing the motor when.

said motor is used with a machine of the drop head or foldable type; :or-to permit the placing of a cover over theiarm and motor when used with a machine of the covered type. 4

A further obj ectof the invention is to provide a sewing machine motor which may be easily permanently fastened to the base portion of the sewing machine arm in such manner as to permit the motor to be swung from one of its positions of rest tothe'other with a minimum effort and which motor may be easily and firmly clampedin'either position.

A further object of the invention is to provide a; sewingmachine motor which is, yieldingly, pivotally mounted on itsbrack et to provide a frictional driving engagement between the motor wheel and the handwheel of the sewing machine when the motor is in its outer driving position. I

A further object ofthe invention is to provide a sewing machine motor which is of simple construction, is strong and durable and is well adapted for the purpose described. I

1 l Vith the above and other objects in view,

the same reference characteris'i indicate the same parts in all of the views:

Fig. 2 is a top VlBWtllGIBOf; and" i Fig. 3 is a horizontal sectionalview takenonlme of Fig. 1 andshowmg the motor in posltlon-to permit the foldmg of the drop head into the well of the frame or to permit the placing of a cover over the head.

Referring to the drawings the numeral 6 indicates a portion of the upper "part of a a sewing machine table provided with the usual opening, 7 the hinged'drop or base portion thereof, and 9 the head or arm of the machine which is mounted on the hinged one'of the improved sewing Fig. lis a side view, partly in. section, of

drop portion and swings downwardly into the table top and is covered by the usual; extension portion-(not shown) in the ordinary manner common to. drop head sewing machines.

The sewing machine arm 'or head 9 com prises the upright column or standard 10 and the horizontally extending arm portion 11 projecting. from I the standard and through which the horizontal driving shaft 12 ex- .tends and has its bearings. A hand or driv-- en wheel 13 mou'ntedon the rear end of the shaft 12 is adapted to be yieldingly engaged and driven by a slightly rooved wheel '14: mounted on the armature shaft 15 of the im-,

proved sewingmachine motor 16; The hand wheel engag1ng;po1t1on of the wheel; 14 of the motor is preferably formed of-c'ork or other like material to provide the necessary wheel and the hand wheel.

rigidly fastened by a screw 17 a horizontally extending p1vot bolt 18. The bolt, extends wardly extending projection 17 to which is i I pivotally through the outer porti'oi'isl of the curvedsupporting.bracket 20. A coiled spring 21 surrounding the pivotbolt 18 and interposed betwee'nthe end portions l9 has one end connected to. the boltand the other; end connected to one of the portions 19 to yieldinglytilt the grooved wheel 14. ofthe motor upwardly and hold -;it in frictionaldriving engagement with the hand wheel z The bracket 20 at its inner end 20 is ad-' justably mounted on the vertically extending stud'bolt 22 of the bracketbase 23 and 'i-fsj clamped in adjusted position by a thumb nut 23 threaded on the stud. Said bracket base 23 is firmly secured to the drop head base 7 by screws 2% which are tapped into the drop head base.

The engaging faces 25 of the. two'base members are angled with relation to a horizontal line to swing the motor to a slightly lower or higher plane when in inoperative position beneath the arm of the sewing machine, the lower position being indicated by dotted lines in Fig. 1. In some forms of sewing machines having lower hand wheels (not shown), the base members are turned a half revolution and in which case the motor will be swung to a higher plane when under the arm. It will be noted that in both positions of adjustment the front or driving wheel end of the motor extends generally in a direction towards the hand wheel of the sewing machine, thus protecting the driving wheel and occupying the minumum space when in inoperative position. Electric current is supplied to the motor by wires 26 leading to a source of electrical supply (not shown) and the speed of rotation of the motor is adapted to be controlled in any manner desired.

In operation-the bracket base is secured to the sewing machine arm base in the manner shown and described and when it is desired to use the motor it is only necessary to loosen the thumb nut, swing the motor from its inoperative position beneath the sewing machine arm to its outer position with the motor wheel beneath the hand wheel. WVhen thus adjustedthe thumb nut is tightened and the motor will be firmly held in position. The motor is then started and controlled in the ordinary manner.

From the foregoing description it will be seen that the sewing machine motor is of very simple construction and ma be easily clamped in either its operative or inoperative position, and when in its inoperative position beneath the sewing machine arm, the arm may be dropped into the well of the machine without removing the motor. Also when in inoperative position a top cover may be placed over sewing machine when witha motor of this type.

What I clainias my invention is 1., The combination with a sewing ma chine having a base portion and an arm portion and a wheel to be driven, of a motor member and its shaft and a driving wheel thereon, a bracket base member mounted on the base portion, a bracket member pivotally mounted at its inner end on the bracket base member and yieldingly connected at its outer end to the motor, said bracket being movable to swing the motor member sidewise from an inoperative out-ot-the-way position closer to the sewing end oi the maused chine to an operative position with the drivl iveeo i ing wheel or the motor yieldingly engaging the lower peripheral portion of the sewing machine wheel. r

2. The combination with a. sewing machine having a base portion and an arm portion and a wheel to be driven, of amotor member and its shaft and a-dri\-'ing wheel thereon, a bracket base member mounted on the base p a bracket member pivotally mounted at its inner end on the bracket base member and yieldinglyconnected at its outer end to the motor member, said bracket being movable to swing the-motor member sidewise from aninoperative position closer to the sewing end of and to the base portion of the machineto an operative position on a higher plane with'the driving wheel of the motor yieldingly engaging the lower peripheral portion of thesewing machine wheel.

3. The combination with a sewingmachine having a base portion and an arm portion and a wheel to be driven, of a motor member and its shaft and a driving wheel thereon, means for pivo'tallyi mounting the motor member on the base portion'in a portion and a wheel to be driven, of a.

bracket member pivotally connected at its lnner end to the base portion and having two positions of rest, a motor member pivotally mounted on the outer end portion of the bracket member and movable vertically and having a driving wheel on its inner end portion, means for yieldingly holding the motor member in its upper position, and means for holding the bracket in either one of its two positions of rest.

.5. The combination with a sewing machine having a base portion and an arm portion and a wheel to be driven, of a bracket base member mounted on the sewing machine base portion and provided with an upstanding stud, a bracket member pivot-ally mounted at its inner end on the stud, a motor member pivotally mounted on the outer end portion of the bracket member and movable vertically and having a driving wheel on its inner end portion which is adapted to engage the lower peripheral portion of the hand wheel,'a coiled spring for yieldingly holding the motor member in an upper position, and a thumb nut for clamping the bracket member in adj austed position on the stud, said motor member when'in inoper 1,474,604 I V 3 U ative position positioned beneath the arm of the sewingrlnachi-ne with the axis of driv -g ing Wheel extending toward the hand Wheel. 7 6. A bracket for a sewing machine motor,

l comprising a base member having means bracket member pivo'taliy. mounted "at its I inner end on the stud and sit its outer end having, means for yieldingly cannecting' Q a sewing machine motor thereto. i In testimony whereof, Ieflix my signa-r ture. e

EMANUELNIELSEN. 1 

